Before you report a bug (or, especially, a feature request) to support@trello.com be sure to check out the Trello on Trello board and see if your issue isn't there already. You can access this board from the Trello on Trello link on the right side of the documentation (click on the book in the toolbar at the top).

If your issue is already there, you can vote for it, and add a comment as well.